The quantitation of how much time constitutes short and recent varies by disease and by context, but the core denotation of acute is always qualitatively in contrast with chronic, which denotes long-lasting disease (for example, in acute leukemia and chronic leukemia).
View full size image. Thomas Edison is usually credited with the invention of the light bulb, but the famous American inventor wasn't the only one who contributed to the development of this revolutionary technology.
One of those people was British physicist Joseph Wilson Swan, who actually received the first patent for a complete incandescent light bulb with a carbon filament in 1879. Swanâs house was the first in the world to be lit by a light bulb.